A Novel Microstrip Open-loop Resonator Filter For High Selectivity Application

Author

Chen, Fuchang ; Tu, Zhihong ; Chu, QingXin ; Yang, Jisong

Author_Institution

Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou

fYear

2007

fDate

11-14 Dec. 2007

Firstpage

1

Lastpage

3

Abstract

In this paper, the design of a novel narrowband microstrip filter is presented, the structure is formed by two resonators of different lengths, the length of one resonator is adjusted so that the first odd resonance is tuned to the center frequency, the length of the other resonator is adjusted so that the next even resonance is tuned again to the center frequency, the difference path of the signal in each resonator produces a transmission zero in the insertion-loss response of the filter . The position of the transmission zero can be changed from high rejected band to low rejected band by adjusting the coupling between the ports and resonators. The simulated results validate the new structures for high-selectivity applications.

Keywords

microstrip filters; microstrip resonators; resonator filters; tuning; coupling; insertion-loss; microstrip open-loop resonator filter; resonance tuning; transmission zero; Couplings; Filtering theory; Frequency; Information filtering; Microstrip filters; Microstrip resonators; Microwave filters; Resonance; Resonator filters; Signal design; Microwave filter; microstrip resonators; transmission zero;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2007. APMC 2007. Asia-Pacific

Conference_Location

Bangkok

Print_ISBN

978-1-4244-0748-4

Electronic_ISBN

978-1-4244-0749-1

Type

conf

DOI

10.1109/APMC.2007.4554782

Filename

4554782